NaCl胁迫对胡芦巴种子萌发及幼苗生长的影响

以胡芦巴（Trigonella foenum—graecum L．）为试验材料，研究了不同浓度梯度的NaCl溶液对其种子萌发及幼苗生长的影响。种子萌发试验表明，胡芦巴种子的发芽率、相对发芽率和发芽指数在浓度≤0．5％的NaCl溶液处理下与对照无差异，但当NaCl浓度〉0．5％时，处理组与对照间表现出显著或极显著差异，当NaCl浓度达到2．0％时，处理组种子萌发的各项指标降到最低。幼苗生长试验表明，NaCl浓度低于0．5％时，对幼苗的生长未表现出不利影响，而当盐胁迫浓度高于0．5％时，幼苗在形态上表现出明显的盐害特征。上述两方面的研究证实，胡芦巴种子及其幼苗能耐受0．5％的NaCl胁迫，表明胡芦巴具有一定的耐盐性。该研究结果为胡芦巴在天津滨海盐碱地区的种植、栽培奠定了基础，并提供了可利用的关键数据资料。

Effects of NaCl Stress on Seed Germination and Seedling Growth of Fenugreek

The seed germination and seedling growth of fenugreek （Trigonella foenum-graecum L.） under NaCl solutions in distinct concentrations of 0.2%, 0.5%, 1.0%, 1.5% and 2.0% were studied in this experiment. The seed germination results show that： germination percentage, relative germination percentage and germination index of the seeds treated with NaCl solutions less than 0.5% had no notable differences with CK, while they were the lowest in the treatment of 2.0% NaCl solution. The seedling growth results show there were no adverse effects on the growth of the seedlings when NaCl solutions were tess than 0.5%. While when the concentration of salt stress was more than 0.5%, the seedlings showed some notable characteristics of salinity harm. The results indicate that fenugreek was tolerant to 0.5% NaCl stress, and could bear salt stress at some degree. Thus, the foundation for the cultivation of fenugreek in saline-alkali soil of coastal region of Tianjin had been laid, and the key data were also provided.